reorganize stack

Author: danghai

algorithms/stack/__init__.py

@@ -0,0 +1,10 @@
+from .stack import *
+from .is_consecutive import *
+from .is_sorted import *
+from .remove_min import *
+from .stutter import *
+from .switch_pairs import *
+from .valid_parenthesis import *
+from .simplify_path import *
+from .stack import *
+from .ordered_stack import *

stack/is_consecutive.py renamed to algorithms/stack/is_consecutive.py

@@ -1,12 +1,14 @@
-from stack.is_consecutive import first_is_consecutive, second_is_consecutive
-from stack.is_sorted import is_sorted
-from stack.remove_min import remove_min
-from stack.stutter import first_stutter, second_stutter
-from stack.switch_pairs import first_switch_pairs, second_switch_pairs
-from stack.valid_parenthesis import is_valid
-from stack.simplify_path import simplify_path
-from stack.stack import ArrayStack, LinkedListStack
-from stack.ordered_stack import OrderedStack
+from algorithms.stack import (
+    first_is_consecutive, second_is_consecutive,
+    is_sorted,
+    remove_min,
+    first_stutter, second_stutter,
+    first_switch_pairs, second_switch_pairs,
+    is_valid,
+    simplify_path,
+    ArrayStack, LinkedListStack,
+    OrderedStack
+)
 
 import unittest
 class TestSuite(unittest.TestCase):